Gastric adenocarcinoma of fundic gland type(GA-FG)is a newly reported gastric tumor,which is a highly differentiated adenocarcinoma with a better prognosis.It has been included in the 2019 WHO Classification of Digestive Tumors.However,further knowledge is still needed for GA-FG clinically and pathologically.GA-FG is divid-ed into 3 types,including chief cell-predominant,parietal cell-predominant,and mixed cell-predominant.Diagnosis and differential diagnosis mainly rely on pathohistological morphology and immunohistochemistry.This article reviews the clinical features,endoscopy,electron microscopy,histologic morphology,immunohistochemistry,possible molecu-lar mechanisms and prognosis of GA-FG.The aim is to enable clinicians and pathologists to keep abreast of new ad-vances in the disease and to improve diagnosis and treatment.

Gastric adenocarcinoma of fundic gland type(GA-FG)is a newly reported gastric tumor,which is a highly differentiated adenocarcinoma with a better prognosis.It has been included in the 2019 WHO Classification of Digestive Tumors.However,further knowledge is still needed for GA-FG clinically and pathologically.GA-FG is divid-ed into 3 types,including chief cell-predominant,parietal cell-predominant,and mixed cell-predominant.Diagnosis and differential diagnosis mainly rely on pathohistological morphology and immunohistochemistry.This article reviews the clinical features,endoscopy,electron microscopy,histologic morphology,immunohistochemistry,possible molecu-lar mechanisms and prognosis of GA-FG.The aim is to enable clinicians and pathologists to keep abreast of new ad-vances in the disease and to improve diagnosis and treatment.

Objective:To investigate the clinical and pathological features of congenital hepatic fibrosis (CHF).Methods:The clinical and pathological findings of 20 patients diagnosed with CHF from 2017 to 2023 were retrospectively analyzed.Results:Among the 20 patients, 8 were males and 12 were females with a median age of 21.5 years. Mostly patients were admitted to the hospital with cirrhosis, portal hypertension and upper gastrointestinal bleeding. Pathological features were diffuse fibrosis in the portal area, formation of fibrous septa of varying width, segmentation of the liver parenchyma, with hyperplasia of small bile ducts. Among them, 1 case (5%) was complicated with Caroli's disease, and 1 case (5%) was HNF1α hepatocellular adenoma. IHC GS showed that was positively expressed in acinar region 3 in 75% cases.Conclusion:CHF is mainly manifested by portal hypertension and its complications. Histopathology is the gold standard for diagnosis. The possibility of CHF should be considered first in children and adolescents with portal hypertension but no history of hepatitis, and complicated kidney disease. The positive pattern of acinus-3 region of GS in IHC is helpful for the diagnosis of CHF.